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| Certification Vendor: | CompTIA |
|---|---|
| Exam Name: | CompTIA Linux+ Certification Exam |
| Exam Number: | XK0-006 |
| Real Exam Qty: | Maximum of 90 |
| Exam Format: | Performance-based, Multiple-choice |
| Passing Score: | 720 (on a scale of 100โ900) |
| Related Certifications: | CompTIA Linux+ |
| Exam Price: | USD 348 |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Sample Questions: | CompTIA XK0-006 Sample Questions |
| Exam Way: | Online (via Pearson VUE) or In-person at Pearson VUE testing centers |
| Pre Condition: | No formal prerequisites; recommended 12 months of hands-on experience with Linux administration |
| Official Syllabus URL: | https://www.comptia.org/en-us/certifications/linux |
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NEW QUESTION # 94
An administrator is testing whether an application on a server is available remotely under the IP address 192.168.88.188 on port 5000. Which of the following commands should the administrator use to verify the connectivity?
Answer: C
Explanation:
The netcat command can actively attempt a TCP connection to a specific IP address and port, making it suitable for verifying whether the application is reachable and listening on port 5000 from a remote system.
NEW QUESTION # 95
A systems administrator needs to set the IP address of a new DNS server. Which of the following files should the administrator modify to complete this task?
Answer: C
Explanation:
DNS client configuration is a foundational Linux networking task covered in Linux+ V8 system management objectives. When an administrator needs to specify the IP address of a DNS server that the system should use for name resolution, the correct file to modify is /etc/resolv.conf.
The /etc/resolv.conf file defines DNS resolver settings, including one or more nameserver entries that specify the IP addresses of DNS servers. Applications and system services rely on this file to resolve hostnames to IP addresses.
The other options are incorrect. /etc/whois.conf configures WHOIS queries. /etc/nsswitch.conf controls the order of name resolution sources but does not define DNS server IP addresses. /etc/dnsmasq.conf configures a local DNS caching service, not the system-wide resolver directly.
Linux+ V8 documentation highlights /etc/resolv.conf as the authoritative DNS client configuration file, though it may be dynamically managed by tools such as NetworkManager or systemd-resolved.
Therefore, the correct answer is B. /etc/resolv.conf.
NEW QUESTION # 96
A systems administrator is working on configuration changes and needs to replace a hostname in a specific file. Which of the following commands should the administrator use to complete this task?
Answer: A
Explanation:
The correct answer is B. sed -i ' s/oldhostname/newhostname/ ' /etc/configuration.file because the sed (stream editor) command is specifically designed for searching, finding, and replacing text within files, which is exactly the requirement in this scenario. The -i option enables in-place editing, meaning the file is modified directly without needing to create a separate output file.
The substitution expression ' s/oldhostname/newhostname/ ' follows the standard sed syntax, where s stands for substitute. It replaces the first occurrence of oldhostname with newhostname on each line. This is a common and efficient method used by Linux administrators when performing configuration updates across files.
Option A is incorrect because cut is used for extracting sections of text, not replacing content, and piping into vi in this way is not valid for automated editing. Option C is incorrect because it filters lines containing oldhostname and redirects them to a file named newhostname, which does not perform any replacement and also overwrites data. Option D is incorrect because while awk can process text, the syntax shown does not correctly replace text within the file and does not write changes back to the original file.
In Linux+ objectives, mastering tools like sed is essential for automation and scripting tasks. Administrators frequently need to update configuration files programmatically, especially across multiple systems. Using sed ensures accuracy, efficiency, and scalability when performing such repetitive text modifications.
NEW QUESTION # 97
Which of the following is a protocol for accessing distributed directory services containing a hierarchy of users, groups, machines, and organization units?
Answer: D
Explanation:
LDAP (Lightweight Directory Access Protocol) is specifically designed for accessing and maintaining distributed directory services that organize users, groups, computers, and organizational units in a hierarchical structure.
NEW QUESTION # 98
Which of the following commands would a Linux administrator use to determine the temperature of a motherboard?
Answer: B
Explanation:
This utility reads hardware sensor data exposed by the system, including motherboard and CPU temperature values, allowing administrators to monitor system thermal conditions.
NEW QUESTION # 99
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